Pile fabric



Patented Aug. 23, 1932 1 GAMILLE DBEYFUS, OF NEW YORK, N. Y.

PILE FABRIC No Drawing.

This invention relates to pile fabrics "and particularly to pile fabricscontaining yarns of organic derivatives of cellulose.

An object of my invention is to produce 5 pile fabrics having a pile ofyarn containing organic derivatives of cellulose, which fabrics have adesirable lustre. Other objects of my invention will appear from thefollowing detailed description.

Pile fabrics, such as velvets, containing a pile of ordinary yarns oforganic derivatives of cellulose do not have the lustre and sheen oftenexpected of such fabrics. I have found that this is due to the fact thatyarns of or ganic derivatives of cellulose as ordinarily made are quitetransparent, and that therefore when a fabric containing pile yarns suchmaterial is viewed, tlie'appearance is rather dull and lifeless due tothe fact that the light is not reflected sufliciently from the exposedends of such pile, so that the back of the pile fabric is moreconspicuous than it should be. I have found that if yarns of organicderivatives of cellulose of increased opacity are employed as the pile,such pile yarns reflect the incident light sufliciently to impart ahighly desirable lustre and sheen to the pile fabric.

In accordance with my invention, pare a pile fabric having a pile ofyarns of organic derivatives of cellulose which yarns have an increasedopacity, preferably caused by the presence of a finely divided pigmenttherein.

The pile of the fabric made in accordance with my invention-containsyarns of any suitable organic derivative of cellulose such as organicesters of cellulose and cellulose eth- -ers. Examples of such organicesters of cellulose are cellulose acetate, cellulose formate,

cellulose propionate and cellulose butyrate, while examples of celluloseothers are ethyl cellulose, methyl cellulose and benzyl cellulose.However I prefer to employ yarns of cellulose acetate. The back of thefabric may be made of yarns of such organic derivatives of cellulose orit may be made of yarns of other fibres such as silk, reconstitutedcellulose, cotton or wool. If desired, the back of the fabric may bemade of both yarns of or- I pre- Application filed May 22 1930. SerialNo. 454,834.

ganic derivatives of cellulose and yarns of such other fibres.

As stated in order to impart among other desirable properties the sheen,fullness and richness to the desired lustre, pile fabric,

the pile yarns of organic derivatives of cellulose should have an erablythis increase presence therein of preferably zinc oxide, zinc sulphide,

increased opacity. Prefd opacity is caused by the a finely dividedpigment,

of white or light color, such as barium sulphate,

calcium sulphate, strontium sulphate, barium phosphate, calciumphosphate,

titanium dioxide,

phosphate,

strontium aluminum hydroxide, lead sulphate or nacreous materials suchas the silky or pearly form of mercurous chloride. These finely dividedpigments may be incorporated in as the pile in any suitable manner.

divided pigment may be added to the solution from which the yarns areAnother way of incorporating such finely spinning formed.

to be employed the yarn Thus the finely divided material is to treat theyarn after its formation with an aqueous solution of a soluble salt inthe presence of a swelling agent for the partic cellulose and then tular organic derivative of o precipitate the pigment within the yarn bytreatment with an aqueous solution of a salt or acid which forms aninsoluble compound with the salt used in the first treated solution. Asan example of this, the yarn containing cellulose acetate may be treatedwith an aqueous solution of barium chloride in the presence of aceticacid or lactic acid as a swelling a ent, and

then treated with a solution of sul uric acid or sodium sulphatesulphate therein.

salt ma lution rom which to precipitate the barium Alternatively, asoluble be incorporated in the spinning sothe yarn is formed, and

the yarn or fabric then treated with a solution of a salt or acid thatprecipitates an insoluble compound in the yarn,

either as a separate operation or in conjunction with a dyeing or otherfinishing ope ally prefer ration. However, I usuto employ yarns formedfrom spinning solutions containingfinely divided pigments in those caseswhere it IS desired to have a greater surface lustre of the filaments oryarn.

acid, formic Often in order to obtain a higher lustre in c the pilefabric, it is desirable to cause the pile to occupy a position otherthan right angles to the plane of the back of the fabric. Such pile mayhave an angle of from 0 to 75 tpf the plane of the fabric to produce apanne e ect.

It is to be understood that the foregoing description is given merely byway of illustration and that many variations may be made therein withoutdeparting from the spirit of my invention.

Having described my invention, what I desire to secure by Letters Patentis: s 1. A ile fabric having a pile comprising yarns 0 organicderivatives of cellulose havmg an opacity increasing material therein.

2. A ile fabric having a pile comprising yarns o cellulose acetatehaving an opacity increasing material therein. i 3. A ile fabric havinga pile comprising yarns 0 organic derivatives of cellulose having afinely divided pigment therein.

4. A pile fabric having a pile comprising yarns of cellulose acetatehaving a finely divided pigment therein. a p

5. A pile fabric having a pile comprising yarns of organic derivativesof cellulose havin a finely-divided pigment therein, which pi e is notat right angles to the plane of the surface of the fabric.

6. A ile fabric having a pile comprising yarns o cellulose acetatehaving a finely divided pigment therein, which pile is not at Eightangles tothe plane of the surfaceof the V a v v ric.

In testimony whereof, I have hereunto subg 1 1 scribed my name.

OAMILLE DREYFUS.

